<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no,viewport-fit=cover"
    />
    <title>mvc</title>
  </head>
  <body>
    <div id="page">
      <section id="app1">
        <div id="content">100</div>
        <div id="buttons">
          <button id="add">加2</button>
          <button id="minus">减2</button>
          <button id="multiply">乘2</button>
          <button id="division">除2</button>
        </div>
      </section>
      <section id="app2">
        <ol id="nav">
          <li><span>1</span></li>
          <li>2</li>
        </ol>
        <ol id="content">
          <li>content 1</li>
          <li>content 2</li>
        </ol>
      </section>
      <section id="app3">
        <div id="circular"></div>
      </section>
      <section id="app4"><div id="square"></div></section>
    </div>
    <script src="main.js"></script>
  </body>
</html>
